Florida aerialist Nik Wallenda has completed a tightrope walk that took him a quarter mile over the Little Colorado River Gorge in northeastern Arizona. From the Discovery Channel and the AP, here's a selection of photos

Daredevil Nik Wallenda crosses a tightrope 1,500 feet above the Little Colorado River Gorge, Ariz., on Sunday, June 23, 2013, on the Navajo Nation outside the boundaries of Grand Canyon National Park. Wallenda completed the tightrope walk that took him aquarter mile across the gorge in just more than 22 minutes. (AP Photo/Rick Bowmer)